由Apache POI创建的excel文件中的兼容模式

Question

I am using POI to create excel file (using HSSFWorkbook) and save with xls file. But when i used higher office (2007+), i got a warning in title bar : Filename.xls [Compatibility Mode].

Workbook wb = new HSSFWorkbook();
Sheet sheet = wb.createSheet("new sheet");

Row row = sheet.createRow((short) 0);
Cell cell = row.createCell(0);
cell.setCellValue(1);

FileOutputStream fileOut = new FileOutputStream("D:/testExcel/workbook.xls");
wb.write(fileOut);
fileOut.close();

How can i configure in in POI to not open file in this mode?

Answer 1

Try,

Workbook wb = WorkbookFactory.create(myExcelFile);
if (wb instanceof HSSFWorkbook) {
    // do whatever
} else if (wb instanceof SXSSFWorkbook) {
    // do whatever
} else if (wb instanceof XSSFWorkbook) {
    // do whatever
}

Your myExcelFile can be an InputStream , File , etc. Check reference.

This will allow you to handle .xls and .xlsx extention files. Perhaps your issue can also be handled.